Jira Cloud DVCS Migration Guide & Documentation Updates

Jira Cloud Customers using the Jira DVCS integration for GitLab will need to migrate to the GitLab for Jira App.

Atlassian will remove support on May 23rd.

We need to define:

• Documentation: Update Jira dev panel configurat... (#384720 - closed)
• What are options for these users - GitLab for Jira App only? Or our Native GitLab Integration is an option as well? (see #360278 (comment 1259588293))
• Create / Update Documentation around our Jira integration options, document steps for users to migrate
• Create a Feature Comparison explaining any differences between the current implementation and the new options
• Identify any gaps, risks, or challenges for users so expectations are clear before they start a migration
• How will we handle data migration? Will this be necessary?